Question

Which of the following is a core vector GIS operation?

• A. \( \text{Overlaying} \)
• B. \( \text{Ionosphere correction} \)
• C. \( \text{Levelling} \)
• D. \( \text{Multipath correction} \)

Hint:

Think of overlaying as stacking maps to see where features from different maps coincide.

Answer 1

The Correct Option is A

Overlaying is a fundamental vector GIS operation that involves combining spatial and attribute data from two or more vector layers. This operation allows for the identification of spatial relationships and the creation of new features based on the intersection or union of input layers. Ionosphere correction and multipath correction are related to GPS data processing, and levelling is a surveying technique for establishing elevations.